Triglycerides are composed of ________ and ________
a. three fatty acids / one glycerol
b. four fused hydrocarbon rings / hydroxyl groups
c. three glycerols / one fatty acid
d. a hydrophilic head / two hydrophobic tails
a
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A single-celled freshwater organism, such as a protistan, is transferred to salt water. What is likely to happen?
a. The cell will bursts b. Salt will be pumped out of the cell. c. The cell will shrink. d. Enzymes will flow out of the cell. e. Water will move into the cell.
Choose the letter that best describes the function of this receptor type: Merkle cell
A. tonic receptors located near the surface of the skin B. pressure sensitive receptors deep in the subcutaneous layer C. receptors on the face and fingertips sensitive to light touch
It is discovered that a chromosome from the cells of a particular organism is made up of a strand of DNA that is 500 base pairs long. If 30% of the DNA molecule is determined to be made up of adenine, how many of the bases would you expect to be guanine?
What will be an ideal response?
Water tends to move into a cell that has a(n):
A. high turgor pressure due to cell wall rigidity B. high, positive water potential C. more negative water potential than its surroundings D. low turgor pressure